<template>
  <div class="bouncing-balls-wrapper">
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="circle"></div>
    <div class="shadow"></div>
    <div class="shadow"></div>
    <div class="shadow"></div>
  </div>
</template>

<script setup lang="ts">
// 弹跳圆点加载动画，无需特殊逻辑
</script>

<style scoped>
.bouncing-balls-wrapper {
  width: 200px;
  height: 60px;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.circle {
  width: 20px;
  height: 20px;
  position: absolute;
  border-radius: 50%;
  background-color: #585858;
  left: 15%;
  transform-origin: 50%;
  animation: circle7124 .5s alternate infinite ease;
}
@keyframes circle7124 {
  0% {
    top: 60px;
    height: 5px;
    border-radius: 50px 50px 25px 25px;
    transform: scaleX(1.7);
  }
  40% {
    height: 20px;
    border-radius: 50%;
    transform: scaleX(1);
  }
  100% {
    top: 0%;
  }
}
.circle:nth-child(2) {
  left: 45%;
  animation-delay: .2s;
}
.circle:nth-child(3) {
  left: auto;
  right: 15%;
  animation-delay: .3s;
}
.shadow {
  width: 20px;
  height: 4px;
  border-radius: 50%;
  background-color: rgba(0,0,0,0.9);
  position: absolute;
  top: 62px;
  transform-origin: 50%;
  z-index: -1;
  left: 15%;
  filter: blur(1px);
  animation: shadow046 .5s alternate infinite ease;
}
@keyframes shadow046 {
  0% {
    transform: scaleX(1.5);
  }
  40% {
    transform: scaleX(1);
    opacity: .7;
  }
  100% {
    transform: scaleX(.2);
    opacity: .4;
  }
}
.shadow:nth-child(4) {
  left: 45%;
  animation-delay: .2s;
}
.shadow:nth-child(5) {
  left: auto;
  right: 15%;
  animation-delay: .3s;
}
/* 暗色主题适配 */
:deep(.dark) .bouncing-balls-wrapper .circle {
  background-color: #1fa2ff;
}
:deep(.dark) .bouncing-balls-wrapper .shadow {
  background-color: rgba(31,162,255,0.3);
}
</style> 